Advances In Cli Flyover Measurements, The Helicopter Approach (1989)

By Steven I. Biro

During 1988 many engineers and field technicians experienced irregularities when trying to correlate the fixed-wing airplane-type CLI FLYOVER test data with the results of their ground surveys. The inconsistencies seemed to be related to the fact that the test dipole was not operating in open space, the high cruising speed of the aircraft and the cockpit's limited visibility. During a helicopter flyover the test antenna is front-mounted, in open space. The helicopter can cruise at moderate speed and the cockpit's vertical visibility is unlimited. The presentation compares and analyzes the radiation pattern characteristics of the test dipole under the fuselage and in front of the aircraft. This is followed by a discussion of the triangulation method to determine exact leakage source locations. Finally, a few observations are presented about digital leakage recordings and aircraft position identification methods.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Advances In Cli Flyover Measurements, The Helicopter Approach
By Steven I. Biro
CLI Measurements For Large Systems
By Bob Saunders
Computer Assisted Design Of CATV Antenna-Tower/Antenna-Arrays
By Steven I. Biro, Biro Engineering
A Practical Approach To Airborne Signal Leakage Testing (CLI)
By Bill Park & Collin Mcintyre
CATV Headend Engineering
By Steven I. Biro, George C. Kanen, Philip D. Hamlin, Patrick R. J. Court, Floyd O. Vincent, B.R. Carter
CLI- A Total Proven Approach
By Victor B. Gates and Clayton A. Collins
Antenna Radiation Pattern Analysis & Co-Channel Protection
By Steven I. Biro
Co-Channel Protection Limitations Of The Circularly Polarized ( CP) Antenna-Array
By Steven I. Biro, Biro Engineering
The Cumulative Leakage Index (CLI) Made Easy
By Ralph A. Haller, Federal Communications Commission
The Phazar, A New Interference Rejection Device
By Peter Conte, CATV Components Co. & Steven I. Biro, Biro Associates
More Results >>